More than 140,000 fans will attend Sunday's Japanese Grand Prix (live on BBC One, BBC Radio 5 live and online from 06:00 BST), where Lewis Hamilton and Nico Rosberg will resume their title battle from the front row - Hamilton currently leads Rosberg by 41 points

Lauda, the non-executive director of Mercedes F1, was talking to BBC One before qualifying for the race at Suzuka.

He said: "In the end, Jenson and Ron are clever enough to get it together. Jenson said to me yesterday he wants to drive there and doesn't want to retire."

Speculation has swirled around Button since newspaper reports last week that he was poised to announce his retirement at the Japanese Grand Prix this weekend.

Button himself has said he can give no further information about his future but that he was in "good talks" with McLaren.

He told BBC F1 co-commentator David Coulthard during an interview in Japan this weekend: "The stories haven't come from me.

"Last race I was disappointed and I said I haven't had the joy, which was true.

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Kvyat flips car in qualifying crash

"Because I was so emotional, they took that as: 'Oh, he's going to retire this weekend'."

Lauda added on BBC One's qualifying show on Saturday: "I said to Jenson yesterday: 'Fight your fight with Ron over money.' Because it is always the same. But then stay, because if you go, one of the last quick, experienced guys has gone. So I say to Ron: 'Pay him the money.'"

Lauda's comments are a reflection of 35-year-old Button's standing as one of the most highly regarded drivers in F1.

Dennis is in Japan and has held talks with Button, but has so far not gone to the Suzuka track.

A McLaren spokesman said: "Ron has a virus, and has been confined to bed in a Tokyo hotel room for the past two days, but he intends to come to the circuit on race day."

Button has a contract with McLaren which states he will drive for them in 2016 unless they activate an option to release him by 30 September.

Button is extremely popular among fans and the F1 community

The contract dictates a pay rise of $5m (£3.2m) from his current salary of a reputed $10m (£6.6m).

Insiders say the two had been arguing over Dennis's desire to reduce that salary, but it is understood the McLaren chairman has now backed down.

But Button, whose relationship with Dennis is said by insiders to be cool, has not yet officially told the team whether he wants to retire.

Could Alonso go as well?

Insiders at McLaren have expressed doubts about whether Alonso wants to stay in 2016 in the wake of a disappointing season in their first year of a renewed partnership with engine supplier Honda.

Alonso's manager Flavio Briatore was quoted in the Spanish newspaper El Mundo on Friday saying: "No one imagined it would be this disaster, but I know the people from Honda well and although they do things their way, they know engines. In 2016 they will be fighting for podiums."

Doubts have been raised about the future of both Button and his team mate Fernando Alonso

Briatore added: "If he cannot get a winning car in Formula 1, he will find it somewhere else."

Asked whether he would race next year and see out his contract, Alonso said: "Definitely I can tell you I will not go anywhere else."